I`so*cli"nal (?), I`so*clin"ic (?), a. [Iso- + Gr. to incline.]
Of or pertaining to, or indicating, equality of inclination or dip; having equal inclination or dip.
Isoclinal lines Magnetism, lines on the earth's surface connecting places at which a dipping needle indicates the same inclination or dip.
© Webster 1913.